*/
    private Map<String, List<MojoExecution>> forkedExecutions = new LinkedHashMap<>();

    public MojoExecution(Plugin plugin, String goal, String executionId) {
        this.plugin = plugin;
        this.goal = goal;
        this.executionId = executionId;
    }

    public MojoExecution(MojoDescriptor mojoDescriptor) {
        this.mojoDescriptor = mojoDescriptor;

              </params>
            </configuration>
          </execution>
          <execution>
            <id>plugin-doc</id>
            <goals>
              <goal>xdoc</goal>
              <goal>xsd</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
              <version>1.2.0</version>
              <models>

              </params>
            </configuration>
          </execution>
          <execution>
            <id>modello-site-docs</id>
            <goals>
              <goal>xdoc</goal>
              <goal>xsd</goal>
            </goals>
            <phase>generate-resources</phase>
            <configuration>
              <version>1.3.0</version>
              <models>

              <id>parent-1</id>
              <phase>validate</phase>
              <goals>
                <goal>parent-1</goal>
              </goals>
            </execution>
            <execution>
              <id>parent-2</id>
              <phase>validate</phase>
              <goals>
                <goal>parent-2</goal>
              </goals>
            </execution>
            <execution>

     * @return the phase
     */
    @Nonnull
    String phase() default "";

    /**
     * Goal to fork. Note that specifying a phase overrides specifying a goal. The specified <code>goal</code> must be
     * another goal of the same plugin.
     * @return the goal
     */
    @Nonnull
    String goal() default "";

    /**

        <executions>
          <execution>
            <id>merge</id>
            <phase>validate</phase>
            <goals>
              <goal>parent-b</goal>
              <goal>merged</goal>
              <goal>parent-a</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>

            <id>child-1</id>
            <phase>validate</phase>
            <goals>
              <goal>child-1</goal>
            </goals>
          </execution>
          <execution>
            <id>child-2</id>
            <phase>validate</phase>
            <goals>
              <goal>child-2</goal>
            </goals>
          </execution>
          <execution>

        <version>0.1</version>
        <executions>
          <execution>
            <id>remote-resources</id>
            <goals>
              <goal>xpp3-writer</goal>
              <goal>java</goal>
              <goal>xpp3-reader</goal>
            </goals>
            <configuration>
              <version>1.1.0</version>
              <models>
                <model>src/main/mdo/remote-resources.mdo</model>

            <id>exec-1</id>
            <phase>validate</phase>
            <goals>
              <goal>log-string</goal>
            </goals>
          </execution>
          <execution>
            <!-- NOTE: <id> deliberately omitted here! -->
            <phase>validate</phase>
            <goals>
              <goal>log-string</goal>
            </goals>
          </execution>
        </executions>
      </plugin>

        <version>5.1.8</version>
        <executions>
          <execution>
            <id>bundle-manifest</id>
            <phase>process-classes</phase>
            <goals>
              <goal>manifest</goal>
            </goals>
          </execution>
        </executions>
        <configuration>
          <instructions>
            <Export-Package>com.google.common.util.concurrent.internal</Export-Package>